Q of the Earth in the 0.5-10Hz Band
Abstract
The study of spectral characteristics of short period body waves using a worldwide data set indicates that the high frequency fall-off rates of body wave spectra correlate with the tectonic regime of the upper mantle structures traversed. The study also shows, in a consistent manner, that this is due to lateral variations of omega in the mantle. The magnitude of the worldwide omega variations in the mantle is of the same order as that previously observed for the United States. The internal consistency of the observations is such that crustal and site effects and instrument nonlinearity can be ruled out as factors significantly affecting the t estimates obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 16, 1981
- Accession Number
- ADA117712
Entities
People
- A. O'donnell
- D. W. Rivers
- P. J. Klouda
- T. W. Mcelfresh
- Z. A. Der